CARRIER Controls And HVAC Accessories Manual L0210355
User Manual: CARRIER CARRIER Controls and HVAC Accessories Manual CARRIER Controls and HVAC Accessories Owner's Manual, CARRIER Controls and HVAC Accessories installation guides
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HEATING & COOLING Programmable Dual Fuel Thermostats Visit www.carder.com Installation, Start-Up, and Operating Instructions NOTE: Read the entire instruction manual before starting installation. the --> SYSTEM CONSIDERATIONS This symbol --9 indicates a change since the last issue. INDEX Page SAFETY CONSIDERATIONS ..................................................... 1 INTRODUCTION .......................................................................... I SYSTEM CONSIDERATIONS .................................................... I APPLICATION .............................................................................. 2 DESCRIPTION OF OPERATION ............................................ 2-3 INSTALLATION CONSIDERATIONS ....................................... 3 INSTALLATION ...................................................................... 3-12 Thermostat Location ................................................................. 3 Set DIP Switches ................................................................... 3-4 Install Thermostat ..................................................................... 4 Set Thermostat Configuration ............................................... 4-6 Check Thermostat Operation .................................................... 6 Final Settings ............................................................................ 7 Checklist .................................................................................... 7 WIRING DIAGRAMS ............................................................. 7-10 OPERATIONAL INFORMATION ............................................. 11 TROUBLESHOOTING ............................................................... 11 CONFIGURATION RECORD .................................................... 12 SAFETY Read and follow local electrical during instructions installation. to local and national electrical tion may damage thermostat. codes. carefully. All wiring be alert Understand to the potential the signal Improper Follow could injury _sult identify words injury or death. in personal unsafe practices or product wiring 7-day mounted, a heat for personal DANGER, WARNING signifies or death. which would HP/fumace plus interface period savings. allow Up.to for 7 independent supplied with thermostat. As aa ENERGY STAR _, Carrier Corporation has det*_ that this product meets the ENERGY STAR guidellncs for energy efficiency. f HEIGHT (IN.) 4-1/4 --->Fig. l_arrier a hazard CAUTION fuel which is used setback heating m personal is a wail- proper control without and cooling programming 4 time/temperature days thermostat combination settings may be programmed. WIDTH (IN.) 7-1/2 DEPTH (IN.) 1-3/8 Programmable Thermostat and CAU- result in minor which provides furnace kit. Separate auto changeover energy dual thermostat and and Part It is A98426 damage. programmable (HP) 2-stage J injury. WARNING, injury and property low-vohage purdp HP thermostat kit. An outdoor temperature sensor, MUST be used with this thermostat. or installa- INTRODUCTION Carrier's a HP/furnace interface No. TSTATXXSEN01-B to be used only in HP/furnace all TION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal a conventional It replaces must conform Recognize safety information. This is the safety-alert symbol/b,. When you see this symbol on the equipment and in the instruction manual, is designed installations. CONSIDERATIONS manufacturer codes The dual fuel thermostat of using a set points, for maximum per 24 hour Batteries are not required; during a power interruption, the internal memory stores programs for an unlimited time and the clock continues to run for at least 72 hrs. If HP is not already equipped with a high-pressure switch, one must be added for dual fuel applications. It protects HP from overpressure which would occur if a failure resulted in both HP and furnace operating at same time. Kit No. KSAHI0201HPS includes required switch and instructions for its proper installation. A HP/furnace installation has several special requirements. Foremost is that furnace and HP must not be allowed to operate at same time, except during HP defrost. A second is to have furnace complete a heating cycle once it is turned on. A third is the need to have HP not operate at all when outdoor temperatures are below a certain value. A fourth is to have the furnace not operate at all when outdoor temperatures are above a certain higher value. Finally, HP and furnace must work together properly to provide an efficient and comfortable defrost. These requirements are addressed by the dual fuel thermostat itself and an interface kit is NOT required. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without Incurring Obligations. Tab I' misc_ misc_ PC 101 CatalogNO_03TS-TA9 Printedin U_S_A_ Foan TSTAT-18SI Pg 1 10-98 Replaces_TSTAT-9Si --> APPLICATION The dual fuel thermostat is designed for the following applications: will "push" the "balance point" so the two settings do not overlap. Likewise, moving up the "balance point" will push the "auxiliary heat lockout" setting. I-stage I-stage 2-stage 2-stage When the two settings are the same, the system views this as a single outdoor "balance point" temperature, and the heat pump is used for above (warmer outdoor temperatures) and the furnace for below (colder outdoor temperatures.) cool, cool, cool, coal, 2-stage 3-stage 3-stage 4-stage heat: heat: heat: heat: 1-speed l-speed 2-speed 2-speed HP HP HP HP with with with with 1-stage 2-stage l-stage 2-stage furnace fumaea furnace furnace* *This combination must use furnace algorithm to control furnace staging. DESCRIPTION OF OPERATION Cooling Operatinn--Single Speed Balance Point Temperature HP cooling: O/W2 energizes reversing valve to select cooling operation. G energizes furnace blower. Y/Y2 energizes compressor and selects high blower speed at furnace. The "balance point" temperature is a setting which affects the operation of the heating mode. This is a field-selected input temperature (range 5-55°F) where the dual fuel thermostat will monitor outdoor air temperature and decide whether to enable or disable the heat pump. When cooling demand is satisfied, G and Y/Y2 are de-energized. O/W2 will remain on to minimize cycling of reversing valve. It will turn off only when a call for heat occurs. If the outdoor temperature is above the "balance point," the beat pump will energize first to try to satisfy the indoor temperature demand. If the heat pump does not make a sufficient improvement within a reasonable time period (i.e. I5 minutes), then the gas urnace will come on to satisfy the indoor temperature demand. If he outdoor temperature is below the "balance point," the heat }ump will not be allowed to operate (i.e. locked out), and the gas _urnace will be used to satisfy the indoor temperature. Cooling Operation Two Speed Low-speed HP cooling: O/W2 energizes reversing valve to select cooling operation. G energizes furnace blower. YI/W2 energizes compressor at low speed and may determine furnace blower speed. [here are three separate concepts which are related to selecting the "inal "balance point" temperature. Read each of the following :arefully to determine the best "balance point" in a dual fuel nstallation: High-speed HP cooling: Y/Y2 is added to low-speed cooling call to operate compressor at high speed and increase blower speed. 2apacity Heating Operatiorv--Single-Speed Balance Temperature: HP heating: O/W2 remains off to select heating operation. G turns on furnace blower. Y/Y2 energizes compressor and increases furnace blower speed. [his is the point where the heat pump cannot provide sufficient :apacity to keep up with the indoor temperature demand because ff declining outdoor temperature. At or below this point, the "urnace is needed to maintain proper indoor temperature. Heating Operatiorv--Two-Speed _.conomic Balance Temperature: HP Low-Speed HP heating: O/W2 remains off to select heating operation. G turns on furnace blower. Y1/W2 turns on compressor at low speed and may also adjust blower speed for low-speed HP operation. _bove this point, the heat pump is the most cost efficient to }perate, and below this point, the furnace is the most cost efficient o operate. This can be somewhat complicated to determine and it nvolves knowing the cost of gas and electricity, as well as the ffficieney of the furnace and heat pump. For the most economical _peration, the heat pump should operate above this temperature iassuming it has sufficient capacity), and the furnace should )perate below this temperature. High-Speed Comfort Balance Temperature: _Vhen the ;upply air ;ubjective Below this _atisfy the HP to low-speed at high speed and adjust Heating heat pump is operating below this point, the indoor feels uncomfortable (i.e. too cool). This is purely and will depend on the homeowner's idea of comfort. temperature, the gas furnace should operate in order to desire for indoor comfort. HP heating: Y/Y2 is added Low W/Wl _,uxiliary Heat Lockout Setting HP operation. Furnace to operate. Operation---Two-Stage Furnace Furnace controls its own blower Thermostat Control heat: causes own blower l'he "auxiliary heat lockout" setting is an optional lockout feature. l'his is in addition to the "balance point." The purpose of this _eature is to lock out the gas furnace whenever the outdoor :emperature is above the selected setting. The temperature range is 5-55°F. When the outdoor temperature is above the "auxiliary heat ockout" setting, the heat pump will become the primary source, fad the gas furnace cannot come on (except in defrost or emergency heat mode). call to operate compressor for high-speed Operation_ingle-Stage W/Wl causes furnace at heating speed. Heating HP heating blower furnace to operate at low heating at low heat. Furnace controls its speed. High heat: YI/W2 is added to low-heat heating call to operate furnace in high-heat mode. Furnace controls its own blower at high heating speed. Heating Operatiotr---Two-Stage Fumace_Algodthm Control W/Wl causes furnace to operate. Based on amount of time it is required to be on, it determines when to operate at low heat and when to operate at high heat. It controls its own blower at proper speed. Fhe "auxiliary heat lockout" setting can never be set below the 'balance point" setting, and likewise, the "balance point" can never ae set above the "auxiliary heat lockout" setting. The range of each _f these is from 5-55°F (or equivalent values in Celsius), or they :an be turned off. When off, they do not limit the equipment aperation. If the "auxiliary heat lockout" setting is moved down, it 2 Table WIRING DIAGRAM SYSTEM TYPE l_eating Stages BALANCE POINT SETnNG STAGE 1 STAGE 2 Furnace Fig. 2 1-speed HP 1-stage furnace Above HP Below Furnace Fig. 4, 6, 8 1-speed HP 2-stage furnace Above HP Below Furnace Lo Fig. 3 2-speed HP 1-stage furnace Above HP Lo Below Furnace Fig. 5, 7, 9 2-speed HP 2-stage furnace Above HP Lo Below Furnace LO or Hi STAGE 3 D Furnace Lo Furnace Hi HP Hi Furnace Hi HP Hi FurnaceLOor Hi Fumace Defrost Operation that 2 wires can be run from the thermostat to an outdoor A unique feature of this thermostat is that a defrost cycle, once started, will always be completed. This is true even if thermostat is preferably or refer to Installation satisfied simplified begins during defrost. The result with an uncompleted defrost is that a heating and its associated cycle Instructions never the outdoor temperature Sensor can be mounted location, sensor to outdoor for unit and Details are INSTALLATION Thermostat should Location be mounted; • Appmximately • Close to or in a frequently partitioning wall. 5 ft (l.5m) from floor. • On a section • In a location where the outdoor temperature sensor wires can be routed to thermostat location. It is acceptable to use 2 separate wires in thermostat cable to connect outdoor sensor. These used of wall without room, preferably pipes on an inside or duct work. wires may be connected at furnace to another pair continuing to outdoor heat pump. The outdoor sensor may then be mounted and connected in vicinity of heat pump, but be sure it is not located in direct sunlight. all heating will be done Thermostat Fan If FAN ON is selected, thermostat energizes G terminal, which causes fan to operate when both heating and cooling are off. Staging Sequence---Heating Depending on whether HP is single or 2 speed and whether furnace is single or 2 stage, the staging of thermostat outputs with increasing demand varies. Table 1 shows the heating staging sequence for all 4 possible combinations of single- and multi-stage equipment. Note that thermostat itself has a maximum of 3 heating stages. Note also that at outdoor temperatures below selected balance point setting no HP operation is allowed. As discussed earlier, once furnace is turned on, it remains on to satisfy all demand. _) should NOT Close to a window, to the outside. • Exposed to direct light and heat from a lamp, sun, fireplace, or other temperature-radiating object which may cause a false reading. In areas with poor an alcove. air circulation, Step 2--Set DIP switch set by the installer. the thermostat 1. Open hinged 2. Remove 4. Snap hinge change apart while, the thermostat which must on to set these 4 switches the wall, so STOP it apart at hinge. and cover. by snapping back half of the right at the same time, pulling to completely separate the 2 halves. right corner of circuit in upper position, use comer 2 halves of swing board, to to position. will be first mounted This switch must be in OFF DO NOT turn ON. will of a small screwdriver have been set, do not reassemble A - Not Used in Dual end front and end. The to opposite The rear plastic 3 or in at the fight are located switch 6. After switches Switch a door within by pressing apart slide switch The dual fuel thermostat uses outdoor temperature to determine whether the furnace or the heat pump is allowed to operate. The outdoor tempermure sensor, Part No. TSTATXXSEN01-B, is supplied with the unit and must be installed. Plan installation so completely case inward back halves apart. 5. Switches such as behind steps: thermostat cover thermostat plastic registers and return-air It is easiest is mounted the following 3. Open from supply DIP Switches is a 4 section complete Note that this control does not require batteries and is not "power stealing". It does require 24 vac (R and C terminals) of the low-vnltage transformer to be connected to it for proper operation. It will not operate without these 2 connections. OUTDOOR TEMPERATURE SENSING wall, or next to a door leading airflow before POWER on an outside Close to or in direct grilles. be properly CONSIDERATIONS be mounted: • There A "freeze protect" feature is built into the dual fuel thermostat. If indoor tempemture sensor fails, and thermostat is in HEAT or AUTO mode, heat will be cycled when outdoor temperature is below 50°F. The amount of heat supplied will increase as outdoor temperature decreases, keeping structure from lieezing. --_ INSTALLATION with connection. Step 1--Thermostat Emergency Heat Continuous included side of the house existing control wires may be used for its connection. provided in the sensor Installation Instructions. "cold blow". During operation of HP in heating mode, HP itself determines when a defrost is necessary. It initiates defrost by energizing its O and W wires. The signal on the O wire switches HP from heating to cooling mode and W signal starts fumaee. Thermostat monitors this action by sensing the signal (which it did not create) on the O line. It responds by turning on its W outputs (both if 2-stage furnace) to hold furnace on high heat. At completion of defrost, indicated by removal of signal from HP on O wire, thermostat does 1 of 2 things. If it is satisfied, it turns off all Y, G, and W outputs which results in all equipment off. If not satisfied, it will turn off Y and G, leaving W on until it becomes satisfied. In this way it assures that furnace will be used to satisfy a heat demand existing after a defrost cycle is completed. If EHEAT mode is selected at thermostat, by furnace. on the north the 2 halves. to wall. Fuel Thermostats position in all dual fuel applications. Switch B - Select Selects between recovery Smart normal changes Smart recovery, and adjusts or Normal and smart to the. new which the set recovery set point is active point Setback from setback. temperature OFF--for smart recovery. This ON_for normal recovery. Switch C - Select time. mode only, starts earlier so that arrive at the programmed TO SET: Normal at the programmed in heating slowly Recovery room temperature at the programmed is the factory installation or taming on unit. will time. 9. Push any excess wire into walt and against mounting base. Seal hole in wall to prevent air leaks. Leaks can affect operation. default. Ill. Snap hinge back together. Use to allow Enable/Disable or prevent temperature of 55°F. compressor reliability. disconnected, TO SET: ON---cooling Switch cooling is disabled regardless at outdoor at outdoor Single-Speed below temperature is allowed Cooling below of cooling If outdoor is enabled D - Select operation Prevention cooling OFF---cooling of Low-Ambient sensor temperatures temperatures or 2-Speed an outdoor 55°F adds of switch 11. Close thermostat assembly making sure pins on back of circuit board align with sockets in connector. to ---> 12. If this is a replacement installation, be sure to remove the interface control which may have been used to interface a standard thermostat to a dual fuel installation. All the wires (with the exception of the outdoor sensor S I and $2 wires) from the thermostat go directly to the furnace. The interface control must be removed and not used. fails or is setting. below below 55°F. 55°F. HP 13. Turn ON power to unit. Use this switch to tell dual fuel thermostat a single- or 2-speed TO SET: OFF--for ON--for Step HP. It must single-speed 2-speed 3--Install whether it is contmlling On power up, display shows dF or d2 for a few seconds to indicate that it is a dual fuel thermostat. (See page 11.) be set properly. HP. --> Step 4--Set HP. Configuration Configuration options, like DIP switch settings, are intended to be selected at installation and normally are not modified by the homeowner. These options are not discussed in the Homeowner's Manual and therefore must be selected as part of the installation. A special procedure allows entry into the configuration mode. While in the configuration mode, 7 selections can be made. A description of each of these and how to use the configuration mode follows. Thermostat 1. Turn OFF all power to unit, 2. If an existing thermostat Thermostat CONFIGURATION is being replaced: Option 01--Anticipator a. Remove existing thermostat from wall. Option 02---Clean b. Disconnect wires from existing thermostat, 1 at a time. Be careful not to allow wires to fall back into the wall. c. As each wire is disconnected, terminal marking. record OPTIONS--SUMMARY: Option 03--Fahrenheit Option _7--Not wire color and adjustment filter timer adjustments or Celsius operation applicable Option 08--Auxiliary heat lookout setting Option 09--10_Not applicable NOTE: Mercury is a hazardous waste and MUST be disposed of properly. Option 1l_Balance point setting 3. Open thermostat rear door (mounting base) to expose mounting holes. The base can be removed to simplify mounting. Snap apart carefully at hinge to separate mounting base from remainder of thermostat. Option 13_Room 4. Route thermostat wires through large hole in mounting base. Level mounting base against wall (for aesthetic value only--thermostat need not be leveled for proper operation) and mark wall through 2 mounting holes. TO ENTER THE CONFIGURATION d. Discard or recycle old thermostat. Option 12--Not applicable temperature offset adjustment Option 14--Not applicable Option 15_Enable AUTO mode MODE: Press and hold FAN button for approximately I0 sec until COOL set point display indicates a flashing 01. The thermostat is now in the configuration mode. It will automatically exit this mode if no button is pressed for 3 minutes. Pressing END button will exit the configuration mode immediately. 5. Drill two 3/16-in. mounting holes in wall where marked. 6. Secure mounting base to wall with 2 screws and anchors provided, (additional anchoring holes available for more secure mounting if needed) making sure all wires extend through hole in mounting base. WHILE IN THE CONFIGURATION MODE: The upper small (COOL set point) display indicates the selected option number and the large display indicates the selection made within that option. One of these will be flashing. The up and down buttons are used both to move between the available options and to make selection for each option. When the option number (small display) is flashing, the up and down buttons adjust it, moving between the available option numbers. After the desired option number has been selected, press SET TIMEcTEMP button once. The large disply will now flash, indicating that the up and down buttons now control the available choices within that option. Each 7. Adjust length and routing of each wire to reach proper terminal and connector block on mounting base with 1/4 in. of extra wire. Strip only 1/4 in. of insulation from each wire to prevent adjacent wires from shorting together when connected. 8. Match and connect equipment wires to proper terminals of the connector blocks. (See Fig. 2 through 9.) Both R and C must be connected for proper thermostat operation. 4 press of SET TIME/q'EMP option (small option (l_ge display) This switches available between the available selections within 3. Use up and down each display). CONFIGURATION Option button and the adjustment thermostat. Higher the configuration Adjustment controls the and cycle rate the This 8---Auxiliary option Heat Lockout allows selection cycle rate. Lower numbers increase the sensitivity and cycle rate. However, a limiting feature will not allow more than 4 cycles per Furnace hour, operation is allowed emergency heat (EHEAT) of setting. 9. Factory default setting unless Unlike conventional mined by current compensate there is evidence slat. Regardless values setting all installations. draw. can range will provide this setting optimum is not to be deter- There is not need is also no droop and the number will control 1 to Try it first. Do not change There of setting from of need to do so. anticipators, for current. and cooling Anticipator is 3. This default in nearly the sensitivity of through performance decrease to their respective to measure, with know. or this thermo- of stages, beth heating mode small (COOL set point) If not, use up and down SET selection is 3. (if not already buttons TIME/TEMP of 1 through there). display will be flashing to move button once See above. 9 on the large display. down 2_lean buttons to move between the available operation (heating, cooling, or fan) before numbers 1 through 9. (Time is 400X to 1600 hrs, or electronic hrs of blower operation. TO SELECT OR ADJUST: buttons to make 2. Press SET TIME/TEMP of OF, or 1 through 3. Use up and choices. button 9 on large down 4. Press SET display buttons SET TIME/TEMP for selection small (now flashing) once to flash current option display. to move Factory default between button of another again to flash upper option, or press END to exit small or Celsius Operation and Celsius Factory default there. See above. Use flashing) to flash large display. between button 5, 10, 15, 20, 25, setting 11. again to flash upper option, or press END to exit small Setting selection of an from temperature. outdoor operating If OF at all outdoor temperature values for outdoor (off) temperatures is selected, temperatures. heat Factory made 8. Moving this setting of 5 ° in C), or OF (off). can only be equal to or below for Option Factory default for Option mode. is allowed 8 setting display higher pump default the setting is choice may "push" Option upward. TO SELECT: 1. Enter configuration up and down indicate l 1. mode buttons if not already to make SET TIME[FEMP button buttons (now to move between this may change setting configuration room large display. Factory for Option default 8. to flash upper small or press END to exit mode. 13--Room allows temperature Temperature calibration sensor. Offset may want to have the displayed or value. or The minus, The numbers miscalibration) are various higher lower Adjustment (or deliberate There owners plus Use display 5, 10, 15, 20, 25, display. 4. Press SET TIME/TEMP button again display for selection of another option, Option See above. flashing) once to flash 30, 35, 40, 45, 50, 55, or OF on large is OF. Remember, there. small temperature selected which number will can range default is 0. This adjusted value temperature for both the display reasons be adjusted to a is the number added between of the why home- to the of actual -5 and +5. Factory will be and the used as the actual control action. For example, if 2 is selected. 72" actual will read 74 °. If set point is 72 ° then the room will control to an actual temperature of 70 ° which TO SELECT: 1. Enter configuration up and down indicate 03. Option once to move of another is prevented selected temperature. operation. may "push" button 55°F in 5° steps (or equivalent degrees, Fahrenheit if not already OF. This setting is 2. the available is choice (now Point allows Heat pump display selection default small TIME/TEMP 1 l--Balance through Use mode. 3---Fahrenheit Select between is Fahrenheit. Option to 2400 there. See above. Factory to make this may change for selection This option configuration Option mode buttons 3. Use up and down mode if not already lower furnace If selected. the setting 30, 35, 40, 45, 50, 55, or OF on large display. 2. Press 1. Enter configuration up and down indicate 02. air cleaner--1600 this feature. this setting 3. Use up and down buttons operation hrs by selecting display up and down indicate 08. Filter Timer of blower temperatures. downward. 1. Enter configuration below number selected.) Factory default is 2 (800 hrs). Recommended selections are: disposable filter_ to 800 hrs, media 4. Press overrides temperatures is selected, TO SELECT: mode. CLEAN FILTER icon is displayed. With OFF selected, icon will never come on, disabling this feature. Time selection can be from filter--1200 at all outdoor (off) of 5 ° in C), or OF (off). for outdoor If OF 11. Moving 11 setting This configaradon 400 to 3600 operating made for Option Factory default 4. Press SET TIME/TEMP button again to flash the upper small disply for selection of another option, or press END to exit the Select hours from temperature. the configuration 3. Use up and choices. Option is prevented the selected temperature values can only be equal to or above 01. current outdoor in 5° steps (or equivalent is OF. Remember, the to flash upper small or press END to exit OF. This setting it to 01. to flash C and F on large Setting of an 2. Press SET TIME/TEMP The upper 2. Press 55°F above set points. TO ADJUST: I. Enter configuration between mode. and slow the regardless numbers Option sensitivity to move 4. Press SET TIME/TEMP button again display for selection of another option, OPTIONS--SELECTION: 1--Anticipator buttons display. mode if not already buttons to make there. (now See above. flashing) Use display will be displayed and acted a positive number selection and vice versa. 2. Press SET TIME/TEMP of F or C. Factory small default button is F. once to flash current selection plus or minus will provide upon as if it were 72 °. The effect is that will make the room temperature lower The thermostat is calibrated within 1° when shipped from the factory, the best accuracy when set to O. an accuracy so this adjustment of --_ Table 2--AcUve Outputs for Each Operating State 1-SPEED HEAT PUMP 2-SPEED HEAT PUMP Pan G Fan G Coo! Y/Y2, O/W2, G Lo Cool Y1/W2, O/W2, G HP Heat Y/Y2, G Hi Cool Lo HP Heat Y1/W2, Y/Y2, O/W2, G YIAN2, G Hi HP Heat Y1/W2, Y/Y2, G Furnace Lo W/W1 Furnace Hi W/W1, Y1/W2 Furnace W/W1 TO SELECT: If system has a 2-speed compressor, it will start on low and proceed to high 15 minutes later due to a staging timer which requires 15 minutes of low before high comes on. The UP and FAN buttons cannot be used to defeat this timer. This timer can be defeated by reducing the set point to more than 5 ° below room temperature, bringing on a high speed demand within 5 seconds. Remember--2-speed units have a 1 minute off time between lo and high speed, so the thermostat's demand will not show immediately as a speed change in the outdoor unit. It will show immediately as an increase in the indoor fan speed. 1. Enter configuration mode if not already there. See above. Use up and down buttons to make small (now flashing) display indicate 13. 2. Press SET TIME/TEMP button once to flash large display. 3. Use up and down buttons to move between -5 and +5 in 1° steps on large display. Factory default is 0. 4. Press SET TIME/TEMP button again to flash upper small display for selection of another option, or press END to exit configuration mode. Option 15_Enable TO TEST HEAT PUMP HEATING: Auto Mode Press MODE button until HEAT icon under it turns on. Press up button until HEAT set point (LOWER right 2-digit display with HEAT now flashing under it) is 2° or 3 ° (not more) above room temperature. This will create a first stage heating demand. A small triangle to the left of this HEAT icon will flash or come on continually. Flashing means the equipment is going to turn on but is presently being held off by a system timer. (See "Operational Information" on page 11 for timer descriptions.) Defeat timer by pressing LIP and FAN buttons together. This will make the triangle stay on and turn on the heat pump. To turn off, reduce the heating set point below the room temperature. The heating and the triangle will turn off within a few seconds. This option allows the installer to enable or disable AUTO mode (automatic changeover between heat and cool). When disabled, AUTO icon does not appear when successive presses of MODE button are used to move between OFF, HEAT, COOL, and EHEAT (in heat pump systems). Factory default is ON (AUTO enabled). TO SELECT: 1. Enter configuration mode if not already there. See above. Use up and down buttons to make small (now flashing) display indicate 15. 2. Press SET TIME/TEMP button once to flash large display. If the system has a 2-speed compressor, it will start on low and proceed to high 15 minutes later due to a staging timer which requires 15 minutes of low before high comes on. The UP and FAN buttons cannot be used to defeat this timer. If set point is raised to more than 5 ° above room temperature, the staging timer is defeated and the thermostat will call for high speed heat pump heating within 5 sec. This is not recommended because once the demand exceeds 5 ° , the thermostat may jump to furnace heating at any time. Use the method below to test the furnace. 3. Use up or down button to move between ON and OF on large display. Factory default is ON (AUTO enabled). 4. Press SET TIME/q'EMP button again to flash upper small display for selection of another option or press END to exit configuration mode. --') Step 5_Check Thermostat Operation Before doing the checkout, press HOLD button to turn on HOLD icon, locking the thermostat in hold mode. This will assure set points do not change during the checkout. Outputs for each stage of operation are listed in Table 2. TO TEST FURNACE HEATING: To test, press MODE button until EHEAT icon turns on. This will allow operation of the furnace only. Raising set point above room temperature will turn on the furnace. Reducing set point below room temperature will turn it off. TO TEST FAN: 1. Press FAN button. Fan ON icon and the G output will go on within a few seconds, causing fan to operate. If the heat pump is single speed and the furnace is 2-stage, the thermostat can be used to control the second stage. (See Fig. 4, 6, and 8.) To test second stage, raise set point to more than 5° above room temperature (defeating 15-minute staging timer). Within 5 sec, the thermostat will bring on the furnace second stage. 2. Pressing FAN button again will turn off the G output and turn on Fan AUTO icon. TO TEST COOLING: Press MODE buuon until COOL icon under it turns on. Press down button until cool set point (upper right 2 digit display with COOL now flashing under it) is 2 ° or 3° below room temperature. This will create a cooling demand. A small triangle to the left of this COOL icon will flash or come on continually. Flashing means the equipment is going to turn on but is presently being held off by a system timer. (See "Operational Information" on page 11 for timer descriptions.) Defeat timer by pressing UP and FAN buttons together. This will make the triangle stay on and turn cooling equipment on. To turn off, raise cooling set point above room temperature. The cooling and the triangle will turn off within a few seconds. 6 ---) Step 6.--Final Settings ---) Step 7---Checklist 1. Assuming the system is to be left in operation after the installation is.complete, use MODE button to select between HEAT, COOL, EHEAT, or AUTO to provide the desired operation of heating, cooling, or both. 2. The default set points and programmed schedule conform to the Energy Star requirements of the U.S. Department of Energy for both heating and cooling. These provide energy saving temperature settings. 1. Put away tools and instruments, 2. Review Homeowner's 4. Fill out and return survey card. Table 5. If AUTO mode is to be used, be sure both heat and cool set points are properly adjusted. Fuel Thermostat 1-Speed HP OFF R C G 2-Speed HP ON R C G Heat Stage 1 Y/Y2 (compressor) Reference SINGLE-SPEED HEAT PUMP Chart "I3NO-SPEED HEAT PUMP 1-Stage Furnace Fig. 2 Fig. 3 2-Stage Furnace Variable-Speed 2-Stage Non-Condensing Furnace Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Quick Reference THERMOSTAT Fan Diagram Variable-Speed 2-Stage Condensing Furnace 6. The FAN button may be used to select between AUTO (fan on only with equipment) and ON (fan on continuously) fan modes. Set DIP 24v Hot i Common Switch D ; 3--Wiring EQUIPMENT SELECTION 4. For further information on temperature selection and programming, refer to Homeowner's Guide. Outdoor Unit Guide with owner. 3. Leave literature packet with owner. 3. Turn on HOLD if fixed set points are to be used. If the programmed schedule is to be used, make sure the HOLD icon is oft: Table 4--Dual and clean up debris. OUTPUTS Heat Stage 2 Heat Stage 3 W/W1 (furnace io) Y1/W2 (furnace hi) Y/Y2 N/A O/W2 W/W1 (furnace) YlP4V2 Y/Y2 O/W2 Y1/W2 (compressor Io) Y/Y2 (compressor hi) Cool Cool Stage 1 Stage 2 Reversing Valve SINGLE-STAGE FURNACE DUALFUEL THERMOSTAT SINGLE-STAGE FURNACE DUALFUEL THERMOSTAT ___ SINGLE-SPEED HEAT PUMP ---[311,-- ___r_, 24 VAO HOT --HEATSTAGE3 (FURNACE)[_.V_I'] FAN [_ ---El HEAT STAGE 2 (FURNACE) --STf_, (0OM..ESSOR, HEAT( L RVS COOLING .___-_LI_ 'l-Gl - HEAT/COOL STAGE 2 (COMPRESSORHI) r_-_]- IS].... -q-El ......... r_ TW_SPEED HEATPUMP -E]---_ RVS COOLING 13q--El NEAT/COOL STAGELO) 1 [_ ;OMpP.ESSOR [] N/A 24 MAC COM 24 MAC COM NJA N/A See notes t, 2, 3, 4, 5, 6, a_d 10 RVS SENSING See notes 1,2, 3, 4, and 9 RVS SENSING OUTDOOR OUTDOOR SENSOR OUTDOOR OUTDOOR ----4 ........ _ r--'z:"-I ............ J CONNECTION _*1 SUGGESTED DIP SWITCH SE'n-INGS ON SUGGESTED DIP SWITCH SETrlNGS A B C OFF OFF OFF (3_ D OFF OFF OFF OFF TWO-STAGE FURNACE DUALFUEL THERMOSTAT DUAL FUEL THERMOSTAT i 24 VAC HOT HEAT STAGE 3 ['_"_ (FURNACE) HEAT STAGE 2 (FURNACELO) HEAT/ ST_E _I--_TI----tf_ HEAT/ -_ OOL 24 VAD COM --1_] .... _ .___-_,-_ .__rT_--1 .___.P--I_ RVS COOLING L STA_, HEAT/C _" 4EAT STAGE HI) 3 _'_. (FURNACE L COMPRESSORHI) (COMPRESSOR) RVS COOLING _ TWO-SPEED HEAT PUMP ___ --- FAN ---t-[Z] FAN TWO-STAGE FURNACS SINGLE-SPEED HEAT PUMP __A__.__.__L[_ 24 VAC HOT Fig. 3_--Single-Stage Furnace with 2-Speed Heat Pump A98443 -) Fig. 2_ingle-Stage Furnace with Single-Speed Heat Pump A98444 .... 24 VAC COM N/A RVS SENSING OUTDOOR [_ See notes 1,2, 3, 4, 7, and 9 See note_, 1, _, 3, 4, S, 6, 8, _r_d 10 RVS SENSING OUTDOOR 1_ [_ coS Nc ,"ON]_ SUGGESTED DIP SWITCH SETTINGS SUGGESTED DIP SWITCH SE13JNGS OFF OFF OFF OFF -_ Fig. 4--Two-Stage Furnace with _Jingle-Speed Heat Pump OFFOFFOFF ON A98562 Fig. 5_Two-Stage Furnace with 2-Speed Heat Pump A98563 VARIABLE-SPEED 80% NON-CONDENSING FURNACE VARIABLE-SPEED AFS FURNACE BOARD DUAL FUEL THERMOSTAT _ _F/._ RVS COOLING HEAT/COOL STAGE t H_) (COMPRESSOR .... w_Z .... (FURNACE LO) r_. I (COMPRESSOR) I HEAT PUMP ', I. HI) --- _ .... -_-_1 .---[_3 --- _ .... -_-_1 E .--_---_-_-E 24 VAC HOT .___ ___ 4___E 24 VAC COM N/A NIA [_ RVS _ HEAT/COOL STAGE 2 _OMPRESSOR FAN 24 VAC COM _E [] L-_-,q__._-_______:<_ LO) FAN 24 VAC HOT TWO-SPEED BOARD__ HEAT STAGE 3 (FURNACE)[_- .... z .... -_L_i HEAT/COOL STAGE 1 II--_B--OAR'-DI "_ HEAT STAGE 3 HEAT STAGE 2 FURNACE AFS HEAT PUMP RVS COOLING (FURNACE 80% NON_ONDSNSING B___ S,NGLE SPEED I)UAL FUEL THERMOSTAT See notes 1,2, 3, 4, 7, and 9 SENSING OUTDOOR 1--13_ RVS SENSING OUTDOOR OUTDOOR See notes 1, 2, 3, 4, 5, 6, 8, and 10 [_ OUTDOOR [_' ............. ............. J J ON i SWITCH SUGGESTED DIP SWITCH SETTINGS SETTINGS A B C O OFF OFF OFF ON A98448 OFF OFF OFF OFF A98447 Fig. 7--Variable-Sp_d 2-Stage Non-Condensing Furnace with 2-Sp_d Heat Pump --_ Fig. 6---Variable-Speed 2-Stage Non-Condensing Furnace with Single-Sp_l Heat Pump VARIABLE-SPEED CONDENSING FURNACE DUAL FUEL THERMOSTAT VARIABLE-SPEED CONDENSING FURNACE DUAL FUEL THERMOSTAT SINGLE-SPEED HEAT PUMP TWO-SPEED HEAT PUMP w m 24 VAC HOT i,...=...-1 24 VAC HOT FAN FAN HEAT STAGE 2 (FURNACELO) r_---1- (COMPRESSOR) I [] .... _ ..... _TA_ F_--I- .... _ ..... HEAT STAGE 3 _. ..... _ ..... tFURNAC_) HE TIC ..... _ .... HEAT/COOL STAGE 1 _- .... L COMPRE,P_R HI ) RVS COOLING RVS COOLING r__. HEAT/COOL STAGE 1 ;OMPRIESSORLO) _'_ [] HEAT STAGE HI) 3 (FURNACE .... -I_ .... 24 VAC COM .... _. ..... 24 VAC COM N/A [] N/A [_ See notes 1,2, 3, 4, 7, and 9 RVS SENSING RVS SENSING ou_oRI--I-7t See notes 1,2, 3, 4, 5, 6, 8, and t0 [_ .-_]-_-, OUTDOOR OUTDOOR ............. ON -_ .I ON SUGGESTED DIP SWITCH SETTINGS A B C SUGGESTED DIP SWITCH SETTINGS D A OFF OFF OFF OFF B C D OFF OFF OFF ON A98445 Fig. 8---Variable-Speed Furnace with Single-Speed Heat Pump A98446 9 -_ Fig. 9---Variable-Speed Furnace with 2-Speed Heat Pump --) WIRING DIAGRAM NOTES: 1. Heat pump MUST have a high pressure switch for dual fuel applications. 2. Outdoor All"Temperature Sensor must be attached in all dual fuel installations. 3. The RVS Sensing terminal "L" should not be connected. This is internally used to sense defrost operation. 4. Refer to indoor and outdoor equipment Installation Instructions for additional information and setup procedure. 5. Select the "ZONE" position on the 2-speed heat pump control board. 6. Do not select the "FURNACE INTERFACE" or "BALANCE POINT" option on the 2-speed heat pump control board. This is controlled internally by the Dual Fuel Thermostat. 7. As an option, lock the furnace into low-fire operation and let YI/W2 control high-fire operation. Refer to indoor equipment Instructions for proper setup. Installation 8. Furnace must control its own second-stage heat operation via furnace control algorithm. Refer to indoor equipment Installation Instructions for proper setup. 9. Dip Switch D must be in the OFF position for single-speed compressor 10. Dip Switch D must be in the ON position for 2-speed compressor operation. This is the factory default. 10 operation. -* OPERATIONAL Five-minute Compressor INFORMATION Timeguard This timer prevents the compressor from starting unless it has been off for at least 5 minutes. It can be defeated for 1 cycle by simultaneously pressing the FAN button and the UP button. Fifteen-minute Cycle Timer This timer prevents the start of a heating or cooling cycle until at least 15 minutes after the last start of the same cycle. Its function is to assure that equipment is not cycled more than 4 times per hour. This timer is defeated for 1 cycle when the desired temperature is manually changed. It can also be defeated for 1 cycle by simultaneously pressing the FAN button and the UP button. Fifteen-minute Staging Timer In multistage heating or cooling, this timer prevents any higher stage from turning on until the preceding stage has been on for 15 minutes. This timer is defeated if the temperature error is greater than 5°F (usually due to a large change in desired temperatureL Three-minute Minimum On Time In normal operation, when a stage turns on, it will not tam off for a minimum of 3 minutes. Heat/Cool Set Points (Desired Temperatures) A minimum difference of 2 degrees is enforced between heating and cooling set points. This is done by allowing one setting to "push" the other, to maintain this difference. Auto Changeover When the auto changeover mode is selected, a change from heat to cool (or vice versa) will not occur until an opposite mode demand has existed continually for 20 minutes. If the set point is changed, the 20 minute requirement is deleted. Emergency Heat Mode When emergency heat mode is selected, all Y signals are locked out and W becomes energized upon a call for heat. Power On Check When AC power is first applied, all icons of the display are turned on for a few seconds, and the temperature display reads "dF" if it is set for single speed compressor (DIP switch D set to OFF), or "d2" if it is set for 2-speed compressor (DIP switch D set to ON). Error Codes -- - If thermostat cannot properly read room temperature, the room temperature display will indicate "--"and thermostat will enter FREEZE PROTECT mode. When outdoor temperature is below 50"F furnace will operate for sufficient time every half hour to keep home from freezing. The ON time is given by the formula: Minutes ON equals 15 minus (outdoor temperature in "F divided by 4). E2 - If the AC line voltage drops below a minimum (brownout) level, all outputs are turned off and the display indicates E2. If the AC line voltage disappears completely, the display will immediately go blank. E3 - If thermostat cannot properly read outdoor temperature, E3 will alternate with room temperature on the room temperature display and the outdoor temperature will read "--" (2 dashes). E6 - If defrost timer continues for longer than 15 minutes, E6 will be displayed. Check heat pump wiring or for a failed heat pump defrost control. Auxiliary Heat Icon This icon is displayed when the furnace is operating. Smart Recovery With Smart Recovery selected, the transition out of a heating setback begins 90 minutes before the selected recovery time and gradually adjusts room temperature so that the desired temperature will be achieved at the selected recovery time. --_ Thermostat Troubleshooting SYMPTOM WHATTOCHECK Check for 24 VAC between R and C at terminal connections. Both R and C must be connected for proper operation. Blank LCD "-" on temperature display "E2" on temperature display "E3" on temperature display "E6" on temperature display "Clean Filter" on temperature Cooling Heating display Temperature sensor reading out of range. Check sensor for damage. does not clear display, thermostat should be replaced. If recycling power Brownout condition or too low ot voltage to thermostat. Double check wiring and check for 24 VAC between R and C. E2 will clear 15 seconds after proper voltage is restored. Outdoor temperature sensor reading out of range. An attempt to read outdoor temperature results in "--" on display. Check for shorted, open, or failed outdoor temperature sensor. System stuck in defrost. Check wiring and heat pump defrost control beard After the selected number of hours of blower operation "clean filter" will display on LCD. This is to remind the homeowner to "check" tilter. Press "reset filter" button to clear display and reset timer to O. will not come on Select COOL mode. Decrease COOlingset point to 10 degrees below room temperature. Simultaneously press FAN and UP buttons to defeat timers. Check for 24 VAC at Y/Y2 terminal. If present, thermostat is OK and problem is with equipment or wiring. If not present, replace thermostat. will riot come on Select HEAT mode. Increase heating set point to 2 or 3 degrees (not more) above room temperature. Simultaneously press FAN and UP buttons to defeat timers for 1 cycle. Check for 24 VAC at Y/Y2 terminal (single-speed HP) or Y1/W2 terminal (2-sp_ed HP) after 10 seconds. Increase heating set point to 7 or 8 degrees above room temperature. Check for 24VAC at W/Wt terminal. 11 DUAL FUEL THERMOSTAT CONFIGURATION RECORD Date Thermostat Owner/Operator A) B) C) Hardware Configuration Switch A__Not Switch B__Smart Switch C__Low Switch D__Heat Model No. Used. Do Not Turn On. (OFF = Dual Fuel Application) Recovery. (OFF = Enable, ON = Disable) Ambient Cooling Lockout. (OFF = Disable, ON = Enable) Pump Staging. (OFF= 1-Speed, ON =2-Speed) Mode Settings Hold (On or Off) __ Mode (Off, Heat, Cool, Auto, __ Heating Set Point Value __Cooling Set Point Value Fan (Auto or On) Eheat) Configuration Options 1 _ Anticipator (1-9: factory default = 3) 2 _. Clean Filter Timer (Off or 1-9: factory default = 2) 3 _. Fahrenheit or Celsius (F or C: factory default = F) 4-7 _. N/A 8 __ Auxiliary Heat Lockout (Off or 5-55°F: factory default = Off) 9-10__ N/A 11 __ Balance Point Temperature (Off or 5-55°F: factory default = 40) 12 ___ N/A 13 _ Room Temperature Offset (-5 to +5: factory default = 0) 14 _.N/A 15 _.Enable Auto Mode (Off or On: factory default = On) D) Schedule WAKE TIM DAY T TI EVE T IM SLEEP L ] JME;__E_LT._._L Mon Tue Wed Thu Fri Sat __ __ Sun A98449 Copyright 1998 CARRIER Manufe_turer Book I 1 I 4 Tab I misc, Imisc- Corp. * 7310 W. Morris St. • Indianapolis, IN 46231 reserves the right to discontinue, PC 101 Catalog or change NO. 03TS-TA9 tstat18i at any time, speclfk?,41tlons or designs Printed in U.S.A. Form TSTAT-18SI without notioe and without Incurring Pg 12 10-98 obligations, Replsces: TSTAT-9SI
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